onEvent method

@override Future<void> onEvent(String event, [ dynamic params, int? counter ])

统计事件

params support String, Map

if params isn't Map, will ignore counter

Implementation

@override
Future<void> onEvent(String event, [dynamic? params, int? counter]) {
  return _channel.invokeMethod("onEvent", {
    "event": event,
    "params": params,
    "counter": counter,
  });
}